US Bridges

Strater RD over Dodson South Canal 116

PoorClosed to traffic

Phillips County, Montana · 6M E Malta · Structure no. L36235001+07001

Built
1938
87 years old, rebuilt 1980
Condition
Poor
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
68 ft
4 main spans
Daily traffic
33
2023 count
Owner
County
County Highway Agency

About this bridge

Strater RD over Dodson South Canal 116 is a steel stringer/multi-beam or girder carrying Strater RD over Dodson South Canal 116 in Phillips County, Montana. It was built in 1938 and reconstructed in 1980, so it is 87 years old, older than the Montana average of 47 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: closed to all traffic.

It carries about 33 vehicles a day, roughly 3% of them trucks, projected to reach 35 by 2043. The structure is 68 ft (20.7 m) long and 20 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesStrater RD
CrossesDodson South Canal 116
Location6M E Malta
RouteCounty Highway 36229
StateMontana
Coordinates48.38063, -107.75784
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusClosed to all traffic
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation0: Immediate repair necessary to put back in service
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating9 US tons
Inventory rating5 US tons

Structure

MaterialSteel
DeckCorrugated steel
Main spans4
Design loadUnknown
Structure length68 ft (20.7 m)
Longest span19 ft (5.8 m)
Deck width20 ft (6.1 m)
Roadway width19 ft (5.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic33 (2023)
Projected traffic35 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$85,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Strater RD over Dodson South Canal 116 built?

It was built in 1938, making it 87 years old in 2025. It was reconstructed in 1980.

What condition is Strater RD over Dodson South Canal 116 in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in March 2024.

How much traffic does Strater RD over Dodson South Canal 116 carry?

About 33 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Strater RD over Dodson South Canal 116?

The structure is 68 ft (20.7 m) long with a longest span of 19 ft (5.8 m) and a deck 20 ft wide.

Who owns Strater RD over Dodson South Canal 116?

It is owned by the County Highway Agency.